The Union U17s beat LAFC 2-1 to advance to Sunday’s final at Toyota Stadium in Frisco, Texas The Philadelphia Union U17s are heading to the MLS Next Cup final in Toyota Stadium on Sunday night. The Union booked a spot in the final — a second straight for many of the players who were on the U15 team that made the final a year ago — with a 2-1 win over LAFC on Friday night in Texas. Alex Perez gave the Union a lead and Marcos Zambrano scored the game winner after LAFC tied the game up. They’ll play the…